This article was updated Feb. 28, 2023. It was originally published March 1, 2000. Planetary gears can supply high levels of torque and high-speed reduction. They are also relatively compact compared ...

If we don’t count the addition of electronic controls and gradual mechanical and fluid dynamic improvements—the basic design of the 48RE Chrysler transmission found in our ’06 Dodge Ram 2500 has been ...

• Planetary units with helical gears, rather than spur gears, have higher torque capacity and run quieter. • Different manufacturers measure and rate backlash in different ways. • Software tools for ...